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=== Supported Features ===
=== Features that are not implemented ===
 
* '''enumeration'''
 
Octave should be able to parse the enumeration section of a classdef definition but nothing is done with it.  Progress on this feature is tracked in bug report {{bug|44582}}.
 
* '''events and listeners'''
 
Octave should be able to parse the events section of a classdef definition but nothing is done with it.  Progress on this feature is tracked in bug report {{bug|56194}}.
 
* '''built-in class as superclass'''
 
Octave does not allow subclassing built-in classes.  In Matlab, classdef objects may subclass built-in integer, floating point, and logical types.  For example,
<source lang="octave">
classdef nonsense < uint32
  ...
end
</source>
 
does not work.
 
Progress on this feature is tracked in bug report {{bug|44035}}.
 
* '''concatenation of classdef objects'''
 
Octave does not support concatenation of classdef objects to create classdef array objects.
 
Example:
 
<source lang="octave">
classdef MyClass < handle
end
 
c = MyClass();
cc = [c, c];  % won't work
</source>
 
For now you can use a cell-array of objects instead:
<source lang="octave">
cc = {c, c};  % ok
</source>
 
Progress on this feature is tracked in bug reports {{bug|44665}} and {{bug|53906}}.
 
* '''Saving and loading classdef objects'''
 
Saving and loading classdef objects is not supported.
 
Progress on this feature is tracked in bug report {{bug|45833}}
 
=== Supported ===
 
* Methods
 
Classdef methods are supported but not all attributes are fully implemented.
 
{| class="wikitable"
|-
! style="text-align:left;"| Attribute
! Support
! Notes
|-
|Abstract
|Partial
|See bug report {{bug|51377}}
|-
|Access
|Yes
|
|-
|Hidden
|Yes
|
|-
|Sealed
|Yes
|
|-
|Static
|Yes
|
|}


==== Properties ====
* Properties


Classdef properties are supported but not all attributes are implemented.
Classdef properties are supported but not all attributes are implemented.
Line 60: Line 142:
|}
|}


==== Methods ====
=== Open Bug Reports for Issues not Described Above ===
 
Classdef methods are supported but not all attributes are fully implemented.
 
{| class="wikitable"
|-
! style="text-align:left;"| Attribute
! Support
! Notes
|-
|Abstract
|Partial
|See bug report {{bug|51377}}
|-
|Access
|Yes
|
|-
|Hidden
|Yes
|
|-
|Sealed
|Yes
|
|-
|Static
|Yes
|
|}
 
=== Features that are not implemented ===
 
==== [https://www.mathworks.com/help/matlab/enumeration-classes.html enumeration] ====


* {{bug|44582}} Parse the enumeration section of a classdef definition but nothing is done with it.
Issues with basic classdef functionality


==== [https://www.mathworks.com/help/matlab/matlab_oop/learning-to-use-events-and-listeners.html events and listeners] ====
* [https://savannah.gnu.org/bugs/?51659 51659] Calling 'methods' on self causes syntax error
* [https://savannah.gnu.org/bugs/?48682 48682] print_usage fails within classdef block
* [https://savannah.gnu.org/bugs/?49434 49434] which returns "built-in function" for classdef m-file
* [https://savannah.gnu.org/bugs/?48041 48041] classdef: `help myclass` messes up `help @myclass/method`
* [https://savannah.gnu.org/bugs/?43047 43047] help() does not see classdef files
* [https://savannah.gnu.org/bugs/?42620 42620] exist() does not use "class" argument
* [https://savannah.gnu.org/bugs/?53874 53874] doc_cache_create doesnt handle classdef documentation
* [https://savannah.gnu.org/bugs/?52096 52096] meta.class.fromName throws error when class name not found.
* [https://savannah.gnu.org/bugs/?48693 48693] classdef subsref method is not called with correct nargout value
* [https://savannah.gnu.org/bugs/?56006 56006] Object indexing: obj(1).property(end+1:n) - end is interpreted wrong
* [https://savannah.gnu.org/bugs/?55983 55983] 'x(ix) = []' deletion syntax does not work for objects
* [https://savannah.gnu.org/bugs/?55976 55976] cat, repmat, and reshape don't work for classdef objects
* [https://savannah.gnu.org/bugs/?55961 55961] properties function does not preserve order
* [https://savannah.gnu.org/bugs/?55768 55768] display of classdef object should not show private or protected properties
* [https://savannah.gnu.org/bugs/?55766 55766] properties function should not return Hidden properties
* [https://savannah.gnu.org/bugs/?55746 55746] interpreter fails to instantiate classdef with classdef properties


* {{bug|56194}} Parse the events section of a classdef definition but nothing is done with it.
Classdef and +package directories
 
==== [https://www.mathworks.com/help/matlab/matlab_oop/property-validator-functions.html Property Validation Functions] ====
 
=== Open Bug Reports for Other Issues ===
 
==== Issues with basic classdef functionality ====
 
* {{bug|51659}} Calling 'methods' on self causes syntax error
* {{bug|48682}} print_usage fails within classdef block
* {{bug|48041}} classdef: `help myclass` messes up `help @myclass/method`
* {{bug|52096}} meta.class.fromName throws error when class name not found.
* {{bug|48693}} classdef subsref method is not called with correct nargout value - <em>Patch applied, Ready for Test</em>
* {{bug|56006}} Object indexing: obj(1).property(end+1:n) - end is interpreted wrong
* {{bug|55983}} 'x(ix) = []' deletion syntax does not work for objects
* {{bug|55976}} cat, repmat, and reshape don't work for classdef objects
* {{bug|55961}} properties function does not preserve order - <em>Patch submitted, awaiting review</em>
* {{bug|52582}} using static method to initialize property value fails
* {{bug|45833}} support load/save of classdef objects
* {{bug|60729}} print_usage within classdef constructor breaks subsequent calls to the class
* {{bug|61676}} Assigning classdef objects to other types does not call converter methods
* {{bug|63841}} nargout is always 1 for classdef methods
 
==== Classdef and +package directories ====


* [https://savannah.gnu.org/bugs/?54941 54941] interpreter cannot find methods in files of classdefs in packages
* [https://savannah.gnu.org/bugs/?54941 54941] interpreter cannot find methods in files of classdefs in packages


==== Arrays of classdef objects ====
Arrays of classdef objects
 
* {{bug|44665}} error in concatenation of classdef objects
* {{bug|53906}} Cannot make an object array with square brackets
* {{bug|47755}} Access to object arrays
* {{bug|47241}} classdef: assigning property of handle object in object array constructs new object


==== Debugger (fixes for these are in progress) ====
* [https://savannah.gnu.org/bugs/?47755 47755] Access to object arrays
* [https://savannah.gnu.org/bugs/?47241 47241] classdef: assigning property of handle object in object array constructs new object


* {{bug|46451}} <s>unable to set breakpoints within classdef classes</s> - <em> Patch closed </em>
Debugger (fixes for these are in progress)
* {{bug|45404}} <s>Breakpoints cannot be set in classdef methods or +package function files</s> - <em>Report closed</em>
* {{bug|65610}} unable to set breakpoints within set or get functions of classdef classes - <em> Patch submitted </em>


==== Lower-priority issues ====
* [https://savannah.gnu.org/bugs/?46451 46451] unable to set breakpoints within classdef classes
* [https://savannah.gnu.org/bugs/?45404 45404] Breakpoints cannot be set in classdef methods or +package function files


* {{bug|55488}} Invalid use of colon char as classdef function's argument when subsref is overwritten
Lower-priority issues
* {{bug|54966}} Error when assigning array to an object implementing subsasgn() subscripted using "{}"
* {{bug|54028}} copy of non-handle class instance is not deep
* {{bug|53811}} cellfun does not find overloaded function with function name argument
* {{bug|52989}} classdef: missing error messages on multiply defined properties
* {{bug|52582}} Dependent constant properties in classdef errors: no such file
* {{bug|52123}} Indirect memory leak in cdef_manager::initialize ()
* {{bug|51285}} max_recursion_depth error in classdef constructor
* {{bug|50395}} subclassing a class that is also defined as a variable fails
* {{bug|50011}} failure to report error on conflicting methods for classdef
* {{bug|49379}} classdef constructor: .argn. loses first argument, inputname(n) returns inputname(n+1)
* {{bug|55810}} sizeof() and whos() returns 0 bytes for classdef objects
* {{bug|45893}} classdef properties are not reloaded when file is updated
* {{bug|44643}} classdef handle object can go into an recursive loop with isequal(obj1,obj2) if both are self-referential
* {{bug|55755}} mxGetProperty does not work with properties marked as Dependent
* {{bug|55767}} classdef property should not be the same as classdef name (at least for Matlab compatibility)
* {{bug|44035}} unable to subclass built-in types
* {{bug|62432}} classdef object display of boolean matrix property fails with error message


==== Documentation ====
* [https://savannah.gnu.org/bugs/?55488 55488] Invalid use of colon char as classdef function's argument when subsref is overwritten
* [https://savannah.gnu.org/bugs/?54966 54966] Error when assigning array to an object implementing subsasgn() subscripted using "{}"
* [https://savannah.gnu.org/bugs/?54028 54028] copy of non-handle class instance is not deep
* [https://savannah.gnu.org/bugs/?53811 53811] cellfun does not find overloaded function with function name argument
* [https://savannah.gnu.org/bugs/?52989 52989] classdef: missing error messages on multiply defined properties
* [https://savannah.gnu.org/bugs/?52614 52614] setting properties of classdef object during construction with inheritance
* [https://savannah.gnu.org/bugs/?52582 52582] Dependent constant properties in classdef errors: no such file
* [https://savannah.gnu.org/bugs/?52123 52123] Indirect memory leak in cdef_manager::initialize ()
* [https://savannah.gnu.org/bugs/?51285 51285] max_recursion_depth error in classdef constructor
* [https://savannah.gnu.org/bugs/?50395 50395] subclassing a class that is also defined as a variable fails
* [https://savannah.gnu.org/bugs/?50011 50011] failure to report error on conflicting methods for classdef
* [https://savannah.gnu.org/bugs/?49379 49379] classdef constructor: .argn. loses first argument, inputname(n) returns inputname(n+1)
* [https://savannah.gnu.org/bugs/?55810 55810] sizeof() and whos() returns 0 bytes for classdef objects
* [https://savannah.gnu.org/bugs/?45893 45893] classdef properties are not reloaded when file is updated
* [https://savannah.gnu.org/bugs/?44643 44643] classdef handle object can go into an recursive loop with isequal(obj1,obj2) if both are self-referential
* [https://savannah.gnu.org/bugs/?55755 55755] mxGetProperty does not work with properties marked as Dependent
* [https://savannah.gnu.org/bugs/?55767 55767] classdef property should not be the same as classdef name (at least for Matlab compatibility)


* {{bug|50729}} Improve OOP documentation
Documentation
* {{bug|47908}} Octave:classdef-to-struct not documented in warning_ids.m
* {{bug|44590}} More documentation for the current status of classdef implementation


=== Classdef examples in Octave ===
* [https://savannah.gnu.org/bugs/?50729 50729] Improve OOP documentation
* [https://savannah.gnu.org/bugs/?47908 47908] Octave:classdef-to-struct not documented in warning_ids.m
* [https://savannah.gnu.org/bugs/?44590 44590] More documentation for the current status of classdef implementation


* [https://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/miscellaneous/inputParser.m inputParser.m]
=== Classdef examples in the wild ===
* [https://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/web/weboptions.m weboptions.m]
* [https://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/%2Bcontainers/Map.m +containers/Map.m]


[[Category:Development]]
* http://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/general/inputParser.m
* http://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/%2Bcontainers/Map.m
* https://github.com/markuman/go-redis
* https://github.com/PetrKryslUCSD/FinEALE
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